Public water system · IA2264095
ActiveMonona Municipal Water Dept
At a glance
Monona Municipal Water Dept (PWSID IA2264095) is an active community water system in Clayton County, Iowa. It reports serving 1,471 people through 718 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2000.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,471
Service connections
718
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Monona Municipal Water Dept compare with other water systems in Clayton County?
By EPA's size categories, Monona Municipal Water Dept is a small system (501 to 3,300 people). Clayton County has 45 active public water systems, and Monona Municipal Water Dept is the 2nd-largest of them by population served. Its population served is about 4.9 times the county average of 298 people per system, and accounts for 11% of the 13,403 people reported by systems filed under the county. Across Iowa, the 1,828 active systems average 1,718 people each. Nationally, the average active community water system reports serving 6,703 people, so Monona Municipal Water Dept is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Iowa has 1,084 active community water systems, 59% of the state's 1,828 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,502 Iowa systems (82%) list groundwater as their primary source.
Who owns and regulates Monona Municipal Water Dept?
EPA lists Monona Municipal Water Dept as owned by a local government. The IA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 14 of the 45 active systems in Clayton County (31%) are also owned by a local government.
Does Monona Municipal Water Dept have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2000. The violations listed here began between October 1999 and October 2000. By type: 2 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Arsenic (2 of them). EPA lists 3 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2000-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2000-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 1999-10-19 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
All 3 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Monona Municipal Water Dept: frequently asked questions
Who runs Monona Municipal Water Dept?
Monona Municipal Water Dept (PWSID IA2264095) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Monona Municipal Water Dept serve?
Monona Municipal Water Dept reports serving 1,471 people through 718 service connections in Clayton County, Iowa.
Where does Monona Municipal Water Dept get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Monona Municipal Water Dept have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2000. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Monona Municipal Water Dept's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2000. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Monona Municipal Water Dept's water quality report?
As a community water system, Monona Municipal Water Dept must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Clayton County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Guttenberg Water Utility | Clayton | 1,817 | Community | Groundwater |
| Elkader Muni Water Dept | Clayton | 1,219 | Community | Groundwater |
| Strawberry Point Water Supply | Clayton | 1,155 | Community | Groundwater |
| Edgewood Water Supply | Clayton | 939 | Community | Groundwater |
| Garnavillo Water Supply | Clayton | 763 | Community | Groundwater |
| Mcgregor Water Dept | Clayton | 747 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Monona Municipal Water Dept, PWSID IA2264095, Iowa”, https://aquacensus.com/water-systems/iowa/monona-municipal-water-dept-ia2264095 (data as of October 1, 2026).